mathics: remove package definiton

pkgs/development/python-modules/mathics/default.nix

@@ -1,50 +0,0 @@
-{ stdenv
-, buildPythonPackage
-, fetchFromGitHub
-, django
-, python
-, cython
-, sympy
-, ply
-, mpmath
-, dateutil
-, colorama
-, six
-, pexpect
-}:
-
-if (stdenv.lib.versionOlder django.version "1.8") ||
-   (stdenv.lib.versionAtLeast django.version "1.9")
-   then throw "mathics only supports django-1.8.x"
-   else buildPythonPackage rec {
-  pname = "mathics";
-  version = "0.9";
-
-  src = fetchFromGitHub {
-    owner = "mathics";
-    repo = "Mathics";
-    rev = "v${version}";
-    sha256 = "0xzz7j8xskj5y6as178mjmm0i2xbhd4q4mwmdnvghpd2aqq3qx1c";
-  };
-
-  buildInputs = [ pexpect ];
-
-  prePatch = ''
-    substituteInPlace setup.py --replace "sympy==0.7.6" "sympy"
-  '';
-
-  postFixup = ''
-    wrapPythonProgramsIn $out/bin $out
-    patchPythonScript $out/${python.sitePackages}/mathics/manage.py
-  '';
-
-  propagatedBuildInputs = [ cython sympy django ply mpmath dateutil colorama six ];
-
-  meta = with stdenv.lib; {
-    description = "A general-purpose computer algebra system";
-    homepage = "http://www.mathics.org";
-    license = licenses.gpl3;
-    maintainers = [ maintainers.benley ];
-  };
-
-}

pkgs/top-level/aliases.nix

@@ -283,6 +283,7 @@ mapAliases ({
   manpages = man-pages; # added 2015-12-06
   mariadb-client = hiPrio mariadb.client; #added 2019.07.28
   matcha = throw "matcha was renamed to matcha-gtk-theme"; # added 2020-05-09
+  mathics = throw "mathics has been removed from nixpkgs, as it's unmaintained"; # added 2020-08-15
   matrique = spectral; # added 2020-01-27
   mbedtls_1_3 = throw "mbedtls_1_3 is end of life, see https://tls.mbed.org/kb/how-to/upgrade-2.0"; # added 2019-12-08
   mess = mame; # added 2019-10-30

pkgs/top-level/all-packages.nix

@@ -2112,8 +2112,6 @@ in
 
   marlin-calc = callPackage ../tools/misc/marlin-calc {};
 
-  mathics = with python2Packages; toPythonApplication mathics;
-
   masscan = callPackage ../tools/security/masscan {
     stdenv = gccStdenv;
   };

pkgs/top-level/python-packages.nix

@@ -4742,8 +4742,6 @@ in {
 
   markdown-macros = callPackage ../development/python-modules/markdown-macros { };
 
-  mathics = callPackage ../development/python-modules/mathics { };
-
   matplotlib = let
     path = if isPy3k then ../development/python-modules/matplotlib/default.nix else
       ../development/python-modules/matplotlib/2.nix;